Execution Chart

We display below the execution chart for this examination (boot time has been removed).

Trace from the execution

Formatting '/data/fkordon/mcc2022-input.r071-tall-165254780200033.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2022-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-4028
Executing tool gold2021
Input is DLCflexbar-PT-7a, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r071-tall-165254780200033
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 6.7M
-rw-r--r-- 1 mcc users 7.3K Apr 29 22:04 CTLCardinality.txt
-rw-r--r-- 1 mcc users 81K Apr 29 22:04 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.2K Apr 29 20:17 CTLFireability.txt
-rw-r--r-- 1 mcc users 45K Apr 29 20:17 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 10 09:33 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K May 10 09:33 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.7K May 9 07:25 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K May 9 07:25 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K May 9 07:26 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K May 9 07:26 LTLFireability.xml
-rw-r--r-- 1 mcc users 15K Apr 30 05:11 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 164K Apr 30 05:11 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 12K Apr 30 01:45 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 110K Apr 30 01:45 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 9 07:26 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K May 9 07:26 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 10 09:33 equiv_col
-rw-r--r-- 1 mcc users 3 May 10 09:33 instance
-rw-r--r-- 1 mcc users 6 May 10 09:33 iscolored
-rw-r--r-- 1 mcc users 6.2M May 10 09:33 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of booleans
BOOL_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-00
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-01
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-02
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-03
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-04
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-05
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-06
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-07
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-08
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-09
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-10
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-11
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-12
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-13
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-14
FORMULA_NAME DLCflexbar-PT-7a-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1655068529125

Running Version 0
[2022-06-12 21:15:30] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -spotpath, /home/mcc/BenchKit/bin//..//ltlfilt, -z3path, /home/mcc/BenchKit/bin//..//z3/bin/z3, -yices2path, /home/mcc/BenchKit/bin//..//yices/bin/yices, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2022-06-12 21:15:30] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2022-06-12 21:15:31] [INFO ] Load time of PNML (sax parser for PT used): 787 ms
[2022-06-12 21:15:31] [INFO ] Transformed 2913 places.
[2022-06-12 21:15:31] [INFO ] Transformed 23319 transitions.
[2022-06-12 21:15:31] [INFO ] Found NUPN structural information;
[2022-06-12 21:15:31] [INFO ] Parsed PT model containing 2913 places and 23319 transitions in 929 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 32 ms.
Working with output stream class java.io.PrintStream
Ensure Unique test removed 2519 transitions
Reduce redundant transitions removed 2519 transitions.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 673 ms. (steps per millisecond=14 ) properties (out of 16) seen :12
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-14 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-13 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-12 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-11 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-10 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-08 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-07 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-06 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-03 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-01 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-00 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 395 ms. (steps per millisecond=25 ) properties (out of 4) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 399 ms. (steps per millisecond=25 ) properties (out of 4) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 431 ms. (steps per millisecond=23 ) properties (out of 4) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 368 ms. (steps per millisecond=27 ) properties (out of 4) seen :0
Running SMT prover for 4 properties.
[2022-06-12 21:15:34] [INFO ] Flow matrix only has 1246 transitions (discarded 19554 similar events)
// Phase 1: matrix 1246 rows 2913 cols
[2022-06-12 21:15:34] [INFO ] Computed 2171 place invariants in 27 ms
[2022-06-12 21:15:34] [INFO ] SMT Verify possible in real domain returnedunsat :0 sat :0 real:4
[2022-06-12 21:15:36] [INFO ] [Nat]Absence check using 2171 positive place invariants in 780 ms returned sat
[2022-06-12 21:15:36] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2022-06-12 21:15:37] [INFO ] [Nat]Absence check using state equation in 1284 ms returned unsat :2 sat :2
[2022-06-12 21:15:37] [INFO ] State equation strengthened by 284 read => feed constraints.
[2022-06-12 21:15:38] [INFO ] [Nat]Added 284 Read/Feed constraints in 113 ms returned sat
Attempting to minimize the solution found.
Minimization took 195 ms.
[2022-06-12 21:15:38] [INFO ] SMT Verify possible in nat domain returned unsat :2 sat :2
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-09 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-04 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 4 Parikh solutions to 1 different solutions.
Incomplete Parikh walk after 75200 steps, including 987 resets, run finished after 9716 ms. (steps per millisecond=7 ) properties (out of 2) seen :1 could not realise parikh vector
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-15 TRUE TECHNIQUES TOPOLOGICAL PARIKH_WALK
Support contains 47 out of 2913 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 2913/2913 places, 20800/20800 transitions.
Graph (trivial) has 1045 edges and 2913 vertex of which 220 / 2913 are part of one of the 108 SCC in 13 ms
Free SCC test removed 112 places
Drop transitions removed 11107 transitions
Reduce isomorphic transitions removed 11107 transitions.
Graph (complete) has 11309 edges and 2801 vertex of which 2006 are kept as prefixes of interest. Removing 795 places using SCC suffix rule.20 ms
Discarding 795 places :
Also discarding 1279 output transitions
Drop transitions removed 1279 transitions
Drop transitions removed 1645 transitions
Reduce isomorphic transitions removed 1645 transitions.
Drop transitions removed 21 transitions
Trivial Post-agglo rules discarded 21 transitions
Performed 21 trivial Post agglomeration. Transition count delta: 21
Iterating post reduction 0 with 1666 rules applied. Total rules applied 1668 place count 2006 transition count 6748
Reduce places removed 21 places and 0 transitions.
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 23 rules applied. Total rules applied 1691 place count 1985 transition count 6746
Performed 3 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 3 Pre rules applied. Total rules applied 1691 place count 1985 transition count 6743
Deduced a syphon composed of 3 places in 2 ms
Reduce places removed 3 places and 0 transitions.
Iterating global reduction 2 with 6 rules applied. Total rules applied 1697 place count 1982 transition count 6743
Discarding 1672 places :
Symmetric choice reduction at 2 with 1672 rule applications. Total rules 3369 place count 310 transition count 1322
Iterating global reduction 2 with 1672 rules applied. Total rules applied 5041 place count 310 transition count 1322
Ensure Unique test removed 34 transitions
Reduce isomorphic transitions removed 34 transitions.
Iterating post reduction 2 with 34 rules applied. Total rules applied 5075 place count 310 transition count 1288
Performed 21 Post agglomeration using F-continuation condition.Transition count delta: 21
Deduced a syphon composed of 21 places in 0 ms
Reduce places removed 21 places and 0 transitions.
Iterating global reduction 3 with 42 rules applied. Total rules applied 5117 place count 289 transition count 1267
Drop transitions removed 279 transitions
Ensure Unique test removed 27 transitions
Reduce isomorphic transitions removed 306 transitions.
Graph (complete) has 1032 edges and 289 vertex of which 287 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.1 ms
Discarding 2 places :
Also discarding 0 output transitions
Iterating post reduction 3 with 307 rules applied. Total rules applied 5424 place count 287 transition count 961
Discarding 15 places :
Symmetric choice reduction at 4 with 15 rule applications. Total rules 5439 place count 272 transition count 903
Iterating global reduction 4 with 15 rules applied. Total rules applied 5454 place count 272 transition count 903
Performed 6 Post agglomeration using F-continuation condition.Transition count delta: 6
Deduced a syphon composed of 6 places in 1 ms
Reduce places removed 6 places and 0 transitions.
Iterating global reduction 4 with 12 rules applied. Total rules applied 5466 place count 266 transition count 897
Drop transitions removed 343 transitions
Redundant transition composition rules discarded 343 transitions
Iterating global reduction 4 with 343 rules applied. Total rules applied 5809 place count 266 transition count 554
Reduce places removed 8 places and 0 transitions.
Iterating post reduction 4 with 8 rules applied. Total rules applied 5817 place count 258 transition count 554
Performed 5 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 5 with 5 Pre rules applied. Total rules applied 5817 place count 258 transition count 549
Deduced a syphon composed of 5 places in 0 ms
Reduce places removed 5 places and 0 transitions.
Iterating global reduction 5 with 10 rules applied. Total rules applied 5827 place count 253 transition count 549
Discarding 62 places :
Symmetric choice reduction at 5 with 62 rule applications. Total rules 5889 place count 191 transition count 391
Iterating global reduction 5 with 62 rules applied. Total rules applied 5951 place count 191 transition count 391
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 5 with 2 rules applied. Total rules applied 5953 place count 190 transition count 390
Drop transitions removed 20 transitions
Redundant transition composition rules discarded 20 transitions
Iterating global reduction 5 with 20 rules applied. Total rules applied 5973 place count 190 transition count 370
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 5 with 1 rules applied. Total rules applied 5974 place count 189 transition count 370
Discarding 6 places :
Symmetric choice reduction at 6 with 6 rule applications. Total rules 5980 place count 183 transition count 356
Iterating global reduction 6 with 6 rules applied. Total rules applied 5986 place count 183 transition count 356
Free-agglomeration rule applied 6 times.
Iterating global reduction 6 with 6 rules applied. Total rules applied 5992 place count 183 transition count 350
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 6 with 6 rules applied. Total rules applied 5998 place count 177 transition count 350
Drop transitions removed 55 transitions
Redundant transition composition rules discarded 55 transitions
Iterating global reduction 7 with 55 rules applied. Total rules applied 6053 place count 177 transition count 295
Partial Free-agglomeration rule applied 1 times.
Drop transitions removed 1 transitions
Iterating global reduction 7 with 1 rules applied. Total rules applied 6054 place count 177 transition count 295
Applied a total of 6054 rules in 525 ms. Remains 177 /2913 variables (removed 2736) and now considering 295/20800 (removed 20505) transitions.
Finished structural reductions, in 1 iterations. Remains : 177/2913 places, 295/20800 transitions.
[2022-06-12 21:15:49] [INFO ] Flatten gal took : 85 ms
[2022-06-12 21:15:49] [INFO ] Flatten gal took : 54 ms
[2022-06-12 21:15:49] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16892930945426203512.gal : 11 ms
[2022-06-12 21:15:49] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality16428674479195765594.prop : 1 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-reach-linux64, --gc-threshold, 2000000, --quiet, -i, /tmp/ReachabilityCardinality16892930945426203512.gal, -t, CGAL, -reachable-file, /tmp/ReachabilityCardinality16428674479195765594.prop, --nowitness, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-reach command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202104292328/bin/its-reach-linux64 --gc-threshold 2000000 --quiet -i /tmp/ReachabilityCardinality16892930945426203512.gal -t CGAL -reachable-file /tmp/ReachabilityCardinality16428674479195765594.prop --nowitness --gen-order FOLLOW
Loading property file /tmp/ReachabilityCardinality16428674479195765594.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 3
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :3 after 17
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :17 after 18
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :18 after 19
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :19 after 41
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :41 after 75
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :75 after 74881
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,1.02037e+10,0.488772,23052,2,11718,12,50363,7,0,836,44141,0
Total reachable state count : 10203667201

Verifying 1 reachability properties.
Invariant property DLCflexbar-PT-7a-ReachabilityFireability-02 does not hold.
FORMULA DLCflexbar-PT-7a-ReachabilityFireability-02 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCflexbar-PT-7a-ReachabilityFireability-02,1.09502e+07,0.509676,23052,2,4172,12,50363,7,0,905,44141,0
All properties solved without resorting to model-checking.

BK_STOP 1655068550730

--------------------
content from stderr:

+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ ReachabilityFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution ReachabilityFireability -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ cut -d . -f 9
++ ls /home/mcc/BenchKit/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202104292328.jar
+ VERSION=0
+ echo 'Running Version 0'
+ /home/mcc/BenchKit/bin//..//itstools/its-tools -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination ReachabilityFireability -spotpath /home/mcc/BenchKit/bin//..//ltlfilt -z3path /home/mcc/BenchKit/bin//..//z3/bin/z3 -yices2path /home/mcc/BenchKit/bin//..//yices/bin/yices -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600 -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss128m -Xms40m -Xmx16000m

Sequence of Actions to be Executed by the VM

This is useful if one wants to reexecute the tool in the VM from the submitted image disk.

set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="DLCflexbar-PT-7a"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="gold2021"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-4028"
echo " Executing tool gold2021"
echo " Input is DLCflexbar-PT-7a, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r071-tall-165254780200033"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DLCflexbar-PT-7a.tgz
mv DLCflexbar-PT-7a execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "StateSpace" ]; then
rm -f GenericPropertiesVerdict.xml
fi
pwd
ls -lh

echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "StateSpace" ] ; then
echo "The expected result is a vector of booleans"
echo BOOL_VECTOR
else
echo "no data necessary for post analysis"
fi
echo
if [ -f "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
fi
echo
echo "=== Now, execution of the tool begins"
echo
echo -n "BK_START "
date -u +%s%3N
echo
timeout -s 9 $BK_TIME_CONFINEMENT bash -c "/home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n \"BK_STOP \" ; date -u +%s%3N"
if [ $? -eq 137 ] ; then
echo
echo "BK_TIME_CONFINEMENT_REACHED"
fi
echo
echo "--------------------"
echo "content from stderr:"
echo
cat STDERR ;